Die Reaktion von Phenylpentazol mit n-Butyllithium. Synthese von 1,1-Di-n-butyl-2-phenylhydrazin / The Reaction of Phenylpentazole with n-Butyl Lithium. Synthesis of 1,1-Di-n-butyl-2-phenylhydrazine

Abstract

The reaction of phenylpentazole, C6H5-cyclo-N5, with n-butyl lithium in tetrahydrofuran or in diethylether does not yield a lithium pentazolide such as Li(THF)4+N5−. Instead, a mixture of several primary products is obtained, which probably include lithium 1-n-butyl-5-phenyl-pentaazadienide, Li+[n-C4H9− N=N−N−N=N−C6H5]− and di-n-butyl-phenylhydrazide, Li+[(n-C4H9)2N−N−C6H5]−. After hydrolysis 1,1-di-n- butyl-2-phenylhydrazine, (n- C4H9)2N−NH−C6H5, is ob- tained with good yield. This compound is an oil that was characterized by NMR, mass and IR spectroscopy